it is fun（）with friends on the Internet A to chat Bchating C chat_英语解答

it is fun（）with friends on the Internet A to chat Bchating C chatting D chat

人气：174 ℃　时间：2019-08-18 19:38:50

解答

A
be fun to do sth.
不明白的再问哟,请及时采纳,多谢!